Helve operated hammer



Filed Feb. 19, 1929 INVENTOR M Zia/1w /Z x. I

'r'ul; ATTORNEY Patented June 7, 1932 sraras PATENT OFFICE WILLIAM A. ROCKENFIELD, OF ROCHESTER, NEiU YORK, ASSIGNOR TO HIGH SPEED HAMMER CO. INC., OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK HELVE OPERATED HAMMER Application filed February 19,1929. Serial No. 341,138".

The present invention relates to helve operated hammers and an object thereof is to provide a novel connection between the hammer and the helve. Another object of the invention is to provide a novel manner of supporting the hammer. Still another object of the invention is to guide the hammer above and below the helve in a straight line while providing a compensating connection between the helve and the hammer.

To these and other ends, the invention consists of certain parts and combinations of parts, all of which will be hereinafter described: the novel features being pointed out in the appended claims.

In the drawing:

The figure is a side view of a helve operated hammer constructed in accordance with this invention with parts in section.

In the illustrated embodiment of the invention, 3 indicates a helve and hammer support which may be secured to a base frame supporting an anvil of any suitable type. In this instance, the helve hammer support has two spaced arms a and 5, one arranged above the other.

Mounted for vertical movement in the two arms 4 and 5 of the support 3 is a hammer. This hammer has a lower portion 6 which is an guided in the lower arm 4% and has secured thereto a worm wheel 7 mounted in the arm 4 but held against axial movement in the arm with the hammer by a key 8 which permits the hammer to reciprocate in the worm wheel. wheel 7 and imparts rotary movement to the worm wheel as well as to the hammer. Projecting upwardly from the lower portion 60f the hammer is a reduced stem portion 10 which adjacent its upper end has removably secured thereto by a key 11 a bearing sleeve 12 which turnsand reciprocates in a bearing ring or bushing 13 secured in'the upper arm 5 of the hammer and helve support by set screws 14.

Mounted on the upper arm5 of the hammer and helve support is a helve comprising, in this instance, an inner portion 15 in the form of a casting pivoted at 16 to the hammer A worm 9 meshes with the worm and helve support and having bolted thereto transverse opening in which the helve 0pcrates.

With the end in view of connecting the helve to the hammer, it is preferred to bifurcate the outer end of the helve at 18 so that the helve may straddle the portion 10 of the hammer. The helve is also preferably provided on opposite sides with curved bearings 19 which, in this instance, are convex. Cooperatingwith bearings on the opposite sides of the helve are two combined abutments and compensating members 20, each, in this instance, having a curved bearing 21 conforming to a curved bearing 19 on the helve end and also having an opening 21 through which the portion 10 of the hammer extends, the opening being larger than the portion 10 so that each abutment and compensating member may slide or move transversely of the line of movement of the hammer.

Each of the abutments or compensating members is yieldingly supported on the hammer and to this end each of the abutments or compensating members rests against a cushioned abutment 22 cooperating with one side of a cushion 23 which, in this instance, is in the form of a rubber sleeve surrounding the portion 10 of the hammer. The lower cushion 23 has its other end abutting the flange 24: on a hammer above the portion 6 while the upper cushion 23 has its upper end abutting a cupped shaped abutment 25 which surrounds the portion 10 below the sleeve hearing 12 and in engagement with the lower end of said sleeve hearing.

The sleeve bearing 12 is through nuts 26 adjustable on the upper end of the portion 10 of the hammer, adjustable longitudinally of the hammer for the purpose of varying the pressure of the compensating members 20 on the helve. The opening in the upper arm 5 receiving the bushing 13 is as great in diameter as any portion of the hammer or the parts carried thereby so that with the removal of the bushing 13 the hammer and parts carried thereby may be withdrawn from the supporting frame upwardly through the bearing opening. The bifurcated end of the sin helve permits the portion 18 of the latter to be moved laterally out of connection with the hammer after the portion 18 has been disconnected from the portion 15 of the helve.

Any suitable means may be employed for vibrating the helve. In this instance, to an operating shaft 27 may be connected a pitman 28 which through cushions 29 is resiliently and pivotally connected with the portion 15 of the helve, the construction of the operating means herein illustrated being well known. The worm 9 may also be driven from the shaft 27 as by a belt 30.

With this invention the hammer or ram extends above and below the helve and has bearings above and below the helve while at the same time supporting cushioning means above and below the helve. 'The abutments on the helve have bearing surfaces cooperating with bearing surfaces carried by the hammer which permit the rocking movement of the helve notwithstanding the straight line movement of the hammer. These abutments also act as compensating blocks due to their capability of movement transversely of the hammer to compensate for the relativepo sitions that are the result of coupling together a hammer restrained in one straight path and a helve swinging in an are so as to insure smooth action and equal distribution of the impulses through the cushions through the hammer.

What I claim as my invention and desire to secure by Letters Patent is:

1. A helve operated hammer comprising a rotary and reciprocatory hammer, two spaced arms each having a guide, the guides being arranged one above the other and in which the hammer slides and rotates, one of said arms having an opening therein, two non-turning abutmen-ts surrounding said hammer, a vibrating helve extending through said opening of one of said arms and having an opening through which the hammer passes and turns arranged between and cooperating with the two abutments, shock absorbing devices arranged between the helve and the hammer, and means for turning the hammer relatively to the abutments and the helve.

2. A helve operated hammer comprising a rotary and reciprocatory hammer, two nonturning abutments through which the hammer passes, having curved bearings, and a vibrating helve having a portion provided with an opening through which the harm mer passes and turns, said portion lying between the two abutments and having curved bearings on opposite sides cooperating with the curved hearings of the abutments, shock absorbing devices supported on the hammer and arranged between the helve and the hammer, and means for turning the hammer relatively to the abutments and the helve.

3. A helve operated hammer comprising a rotary and reciprocatery hammer, two non turning compensating members through which the hammer passes and turns, means providing for the movement of the compensating members transversely of the line of movement of the hammer, a pivotally mounted helve having a portion engaged on opposite sides by said compensating members and provided with an opening through which the hammer passes and turns, shock absorbing devices supported on the hammer and arranged between the compensating members and the hammer, and means for turning the hammer relatively to the compensating members and the helve.

4, A helve operated hammer comprising a rotary and reciprocatory hammer, two nonturning compensating members through which the hammer passes and turns, means providing for the movement of the compensating members transversely of the line of Y,

movement of the hammer, a pivotally mounted helve having a portion engaged on opposite sides by said compensating members and provided with an opening through which the hammer passes and turns, said compensating members and helve having their engaging surfaces curved, shock absorbing devices supported on the hammer and arranged between the compensating members and the hammer, and means for turning the hammer relatively to the compensating members and the helve.

5. A helve operated hammer comprising a rotary and reciprocatory hammer, two nonturning compensating members through which the hammer passes and turns, means providing for the movement of the compensating members transversely of the line of movement of the hammer, a vibrating helve having a portion engaged on opposite sides by said compensating members and provided with an opening through which the hammer passes and turns, yielding means mounted on the hammer and holding the compensating members toward the helve, and means for turning the hammer relatively to the compensating members and the helve.

6. A helve operated hammer comprising a rotary and reciprocatory hammer, two spaced bearings supporting said hammer for straight line and rotary movement, a helve arranged between the bearings, cushioning means between the helve and the hammer supported by the hammer between the bearings and rotating with the hammer, two non-turning compensating members cooperating with opposite sides of the helve between the latter and the cushioning means, and means for turning the hammer relatively to the compensating members and the helve.

7. A helve operated hammer comprising a rotary and reciprooatory hammer, two spaced bearings supporting said hammer for straight line and rotary movement, a helve arranged between the bearings, cushioning means between the helve and the hammer supported by the hammer between the bearings and rotating with the hammer, two nonturning compensating members cooperating with opposite sides of the helve between the latter and the cushioning means, said compensating members and helve having cooperating curved bearing surfaces, means providing for the movement of the compensating members transversely of the hammer, and means for turning the hammer relatively to the compensating members and the helve.

8. A helve operated hammer comprising a rotary and reciprocatory hammer, two spaced bearings for supporting the hammer for a rotary and a straight line movement, a helve having a portion through which a portion of the hammer between the guides passes and turns, two cushions. supported on the hammer to turn therewith on opposite sides of the helve between the two guides, nonturning compensating members mounted on the hammer and cooperating with opposite sides of the helve arranged between the helve and the cushions and having their movements in the direction of the length of the hammer opposed by the cushions, and means for turning the hammer relatively to the compensating members and the helve.

9. A helve operated hammer comprising a rotary and reciprocatory hammer, two spaced bearings for supporting the hammer for a rotary and a straight line movement, a helve having a portion through which a portion of the hammer between the guides passes and turns, two cushions supported by the hammer to turn therewith on opposite sides of the helve between the two guides, two nonturning compensating members mounted on the hammer and cooperating with opposite sides of the helve and having their movements in the direction of the length of the hammer opposed by the cushions, the compensating members and the helve having 00- operating curved bearing faces, means providing for the movement of the compensating members transversely of the length of the hammer, and means for turning said hammer relatively to the compensating mem bers and the helve.

10. A helve operated hammer comprising a rotary and reciprocatory hammer, two spaced bearings for supporting the hammer for a rotary and a straight line movement, a helve having a portion through which a portion of the hammer between the guides passes and turns, two cushions supported by the hammer on opposite sides of the helve between the two guides and turning with the hammer, two non-turning abutments mounted on the hammer, cooperating with opposite sides of the helve and having their movements in the direction of the length of the hammer opposed by the cushions, a bearing on the hammer longitudinally movable in one of the first mentioned bearings and adjustable longitudinally of the hammer to vary the cushioning action, and means for turnin the hammer relatively to the abutments an the helve.

11. A helve operated hammer comprising a rotary and reciprocatory hammer, two spaced bearings for supporting the hammer for a rotary and a straight line movement, a helve having a portion through which a portion of the hammer between the guides passes and turns, two cushions supported by the hammer on opposite sides of the helve between the two guides and turning with the 

